Inner tire.



J. A. THOMSON.

INNER TIRE.

APPLlcATIoN FILED APR. so, 1913.

Patented Deo. 80, 1913.

UNITED STATES PATENT OFFICE.

JOHN A. THOMSON; OF ALLENTOWN, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD T0 JAMES HENRY HOWARD AND ONE-THIRD TO JOSEPH LAWRENCE HOWARD, BOTH 0F ALLENTOWN, PEN N SYLVANIA.

INNER. TIRE.

To all whom it may concern Be it known that I, JOHN A. THOMSON, residing at Allentown, in the county of Lehigh. and State of Pennsylvania, have invented certain new .and useful Improvements in Inner Tires, whereof the following is a specification, reference :being had to the accompanying drawings.

The inventiin relates more particularly to new and useful improvements in inner tires,

' for motor vehicles, which inner tire is placed vehicle which consists of the between the inner tube and the outer tire, and protects said inner tube from punctures and blowouts.

`An object of the invention is to proyide an inner tube of the above character which is constructed of separate sections, certain.

of the sections being more elastic 'than others, so that said inner tire may be made of suiiicient thickness as to effectively protect the inner tube, without sacrificing the desired resiliency of the tire.

A further Object of the invention is to provide a tire 'of the above character which is separated at its inner face so as to form meeting edges with an outer fabric covering which projects beyond one of said edges and overlaps the other edge.

These and other Objects'will in part be obvious, and will in part be hereinafter more fully disclosed. l,

In the drawings, which show by way of illustration one embodiment of the invention, Figure I, is a sectional view through a tire, and a supporting rim, showing my improved inner tire and its location relativev to the inner tube and outer tire, the tire not .being inflated. Fig. II, is a similar/view Showing the tire inflated. Fig.fIII, is a' fragmentary detail showing the overlapping flap for the inner tire. Fig. IV, is an enlarged detail section o-f a portion of-th'e inner tire, the inner tube, and the Outertre.

In' the drawings, I have shown more or lessdiagra1nmatically a tire for a motor Ordinary cuter shoe Or tire 1., having beads 2, which engage the curved anges 3, of a rim4. Located within this Outer shoe or tire 1, is my improved inner tire 5. Disposed within the inner tire 5, is an inner tube 6.

This inner tire which constitutes the in vention comprises a body` portion .which molded and then The rubber arches are first.

substantially Surrounds the inner tube 6, and is separated at 1ts lnner face so as to fo-rln meeting edges 7, and 8. The body p0r-' Specification of Letters Patent. Patented Dec. 30, 1 913. Application filed April 3ft), 1913. Serial No. 764,476.

arches are formed preferably by a plurality of layers of fabric and rubber, the rubber being so much in excess of the fabric as to make.. the arch highly elastic. -Thearches 13, 14, and 15, are relatively non-elastic arid are referred to hereinafter as fabric arches.

These arches are formed preferably ofa plurality of layers of fabric and withl layers of'rubber. The fabric, however, is so much in excess of the rubber that while said arches are slightly elastic, they are, however, relativevto the rubber arches, nonelastic. The arches 13, 14, and 15, areof less height or thickness .than the arches 9,

10, 11, and 12, as clearly shown 'in Fig." I, of

the drawings. l

Said inner tire consists also of an inner layer or layersof fabric 1.6. The arches are placed side by side onthis inner fabric.

placed o n the inner fabric and disposed sulo-l stantially as shown in the drawings, and

after these arches areset, the fabric arches 13, 14, and 15, are put in place. rI `he fabric arches butt against the rubber arches, and

the meeting edges are so shaped as to fit 1 snugly together, so thatin actual use the inner tire is substantially one integra-l vstructure. A layer or layers of.fabric 17, are laid over the arches. This fabric 17, terminates at 18, (Fig. III), and extends about the tire, and projects beyond the edge 7,

forming a flap 19. The inner tire made up, as `above stated, of the inne-r layers .of

fabric, the outer layers of fabric and thalternate rubber and fabric sections, is vul` canized, but vat relatively low heat, which gives longer life tothe fabric and the rubber. This inne-r tire mayalso be chemi-A c'ally treated if desired to protect the same against wear and moisture.

The inner tire `asabove constructed is adapted to be. placed in any of the well known outer-tires. A specially constructed kinner tube 6, 1s placed wit-hln this inner tire.`

This inner tube is specially constructed for the reason that an outer tire, for example, adapted to take a five-inch 1nner tube,

would, with the use of my improved inner` tire, require a four-inch inner tube. The Hap 19, is placed around the edge 8, ofthe inner tire, and enough slack or looseness left in the flap so that upon the iniating of the inner tube, the edges 7, and 8, of the inner tire may separate sufficiently to force the beads of the outer of the rim.

Before placing the inner tube 6, WithinA firmly into cont-act with the outer tire.

The rubber arches or sections are placed at such .angles as to stand all strains, both directly on the tread and laterally against the outer face of the `outer tire. The fabric arches sustain, in .a large measure, the air pressure within the inner tube. This inner tire protects the. inner tube from puncturing, owing to the greater distance of the inner tube from the outer face of the outer tire, and also'through the actualconstruction of.

the inner tire, and the fabric layers connecting the sections of theinner tire. y

This inner tire also protects the inner tube kfrom blow-out when the cuter t-ire becomes worn. The inner tube'is also capable of use with less air pressure than is necessary where the inner tube is used alone with an outer tire of the construction shown. vThis also tends to reduce the liability of blow out. i In` actual practice a tire of the above conf' struction may be used until theouter tire is yvorn through vin places.4 Furthermore,said 'inner tire may be 'placed in an outer tire,

which is considerably worn, and'give greater length'of time service thereto.

It is obvious that minor changes' in the., detalls of construction and the arrangement -Witnesses' of vparts maybe made Without departin from the spirit of the invention, as set fort in the appended claims.v

Copine! this patent may be obtained for-five cents each, 'by addressing the Commissioner oflatents, l

tire into the angessectlons. f

Having thus described my invention, I claim:

l. An inner tire comprising a body portion adapted to extend substantially about the inner tube, and separated at its inner face to receive said tube, said body portion consist-ing of a plurality of longitudinally extendin circumferential sections placed side by side, and alternately formed of rubber and fabric, said rubber sections being` said-rubber section being ofslightly greater thickness than the fabric sections.

4. An inner tire comprising a body portion, adapted to extend substantially about the inner tube, said body portion consisting of an inner layer ofA fabric, circumferential sections of rubber and fabric placed alternately side by side on said fabric, and an outer layer of fabric extending about said inner tire, said rubber sections being of slightly greater thickness than the fabric 5. An inner tire comprising a body portionV adapted to extend substantially about an inner tube and separated at its inner face to receive said tube, said body portion consisting of a plurality of longitudinally extending circumferential sections, one sect-ion being disposed in the central plane of the tire, the sections on either side of said central section being less elastic than said cen-- signed my name at Allentown, PennsyL f day of April 1913.

Vania, this 24th JOHN A.. THOMSON.'

EDWIN N. STULL, MaRdARET H. Macau.

Washington, D. C. 

